Effect of Annealing Temperature on Microstructure and Superelastic Properties of Ti-Au-Cr-Zr Alloy
Effect of Annealing Temperature on Microstructure and Superelastic Properties of Ti-Au-Cr-Zr Alloy
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DOI：
10.2320/matertrans.m2014439
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发表时间：
2015-03
影响因子：
1.2
通讯作者：
Y. Shinohara;M. Tahara;T. Inamura;S. Miyazaki;H. Hosoda
中科院分区：
文献类型：
--
作者：
Y. Shinohara;M. Tahara;T. Inamura;S. Miyazaki;H. Hosoda
研究了退火温度对Ti-4Au-5Cr-8Zr （mol%）显微组织和超弹性的影响。在1173K退火的试样中只析出ⅱ相，而在1073K以下退火的试样中析出Ti3Au、Zr33Ti40Au27 （Laves相）和′相。在1073K和1173K退火的试样中明显观察到超弹性，而在873K和973K退火的试样中则不存在超弹性。在1073K退火时，Ti3Au的析出增加了试样的最大超弹性恢复应变。这是由于Ti3Au的析出强化作用使滑移临界应力增大所致。(doi: 10.2320 / matertrans.M2014439)
Effect of annealing temperature on microstructure and superelasticity of Ti-4Au-5Cr-8Zr (mol%) was investigated. Only ¢ phase was observed in the specimen annealed at 1173K, whereas the precipitation of Ti3Au, Zr33Ti40Au27 (Laves phase) and ¡ phase occurred in the specimens annealed below 1073K. Superelasticity was clearly observed in the specimens annealed at 1073K and 1173K, though it was absent in the specimens annealed at 873K and 973K. The maximum superelastic recovery strain was increased by the precipitation of Ti3Au in the specimen annealed at 1073K. This is due to the increase in the critical stress for slip by the precipitation strengthening effect of Ti3Au. [doi:10.2320/matertrans.M2014439]